There is zero issue on our bikes. We have metal tanks. The expanding tanks are plastic. Not sure why this is posted on the 675 forum. As stated, it's more of a problem on the older Speed triples/Sprints/Daytonas (955 motor only, I believe).

If you own a ride with a plastic tank it is indeed just a matter or when you will have an issue.. Ethanol is not even remotely good for the plastic tanks.
Thankfully my 1098 has not had an issue,but i make sure no ethanol fuel goes into the bike.

Most of you people are not capable of being your GD self, to damn worried about being politcally correct.
2011-675R Sole Survivor Far to many mods to list2012-250 Ninja 2012-Panigale1199S Beauty Queen

I bought the girl friend a 2010 monster and already on the second tank. Huge gas leak that stank up the whole house from the garage. That would be the third time the monster has been in the shop for warranty.